The most recent reported hail day was 2024-08-30 -- 1 year ago, with nothing reported since. Iroquois County is hit in about half the years on record. The largest stone on record here is 2.75 inches, a baseball and 2.8 times the National Weather Service's 1 inch severe criterion, reported on 2012-05-06 near Clifton.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Illinois. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2024-08-30, around Watseka. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Iroquois County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 16 separate hail days here since 2010 -- 0.9 a year over 17 years of record. They carry 23 reports in total: most hail days here are logged from a single spot. 7 of those 17 years produced none at all. One year dominates the record: 2017 alone produced 4 of the 16 days. The last five years have been quieter than the long run: 2 days since 2022, against 1.2 a year before that.
2 of the 16 days reached 2 inches or more -- 12%, or about one hail day in 8, the last on 2012-05-06. Those big days do not follow the county's usual calendar: most of them fall in May, not June. 5 of the 16 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Illinois, see the Illinois hail map and history.
Reports cluster nearest Crescent City -- 3 of the county's 16 hail days -- then Clifton (2), Buckley (2), Watseka (2) and Wellington (2). Beyond those, NOAA names Gilman and Milford on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Crescent City | 3 | 1.75″ |
| Milford | 2 | 1.00″ |
| Clifton | 1 | 2.75″ |
| 2 Nw Clifton | 1 | 2.00″ |
| Chebanse | 1 | 1.75″ |
The season runs March through June: 13 of the 16 hail days on record fall in those 4 months (81%). June is the single busiest month, with 6 of them (38%). That peak closes the window: the season builds all the way to its worst month and then stops. Hail has also been reported in August, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| March | 3 |
| April | 1 |
| May | 3 |
| June | 6 |
| August | 3 |
That day put 1 report on the map, the biggest 1.25 inches near Watseka. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2024-08-30 | 1.25″ | 1 |
| 2024-06-24 | 1.00″ | 4 |
| 2021-06-12 | 1.25″ | 1 |
| 2019-03-14 | 1.00″ | 1 |
| 2017-06-14 | 1.00″ | 1 |
| 2017-05-26 | 1.25″ | 1 |
| 2017-04-09 | 1.75″ | 1 |
| 2017-03-20 | 1.00″ | 2 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2.75 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own, over the state line included: Kankakee County (29 hail days), Livingston County (19), Vermilion County (40) and Newton County, Indiana (14). Iroquois County sits in between.
Kankakee County · Livingston County · Vermilion County · Newton County, Indiana
Back to the Illinois hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Iroquois County, Illinois only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.